A．How to distinguish people’’s faces.
B．How to describe people’’s personality.
C．How to distinguish people both inward and outward.
D．How to differ good persons from bad persons.

A．George and his wife travel abroad for the holiday this year.
B．George asked a friend for advice about a trip abroad.
C．George gets some advice from a friend about his possible trip abroad.
D．George and his wife would like to travel abroad this holiday but they are still hesitating to do so.